List of NUMB3RS episodes

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This is a list of NUMB3RS episodes for the CBS television series NUMB3RS. The series started on January 23, 2005 with the first season ending on May 13, 2005. The second season began on September 23, 2005 and ended on May 19, 2006. The third season began on September 22, 2006.

1 Season 1: 2005
2 Season 2: 2005-2006
3 Season 3: 2006-2007
4 References

[edit] Season 1: 2005

Season 1 premiered on January 23, 2005 and finished on May 13, 2005. The first season sees the start of the working relationship between Don Eppes, an FBI agent, and his genius brother Charlie, an applied mathematician and professor at a local university. The rest of Don's FBI team consists of Terry Lake and David Sinclair. Don and Charlie's father, Alan Eppes, provides emotional support for the pair, while the brilliant Professor Larry Fleinhardt and promising doctoral student Amita Ramanujan provide mathematical support and insights to Charlie.

Title	Writer(s)	Director(s)	Original Airdate	#
Pilot	Nicolas Falacci, Cheryl Heuton	Davis Guggenheim, Mick Jackson	January 23, 2005	101
Charlie assists Don on a serial rapist case by calculating a "hot zone", an area where the rapist is most likely to live. Don is removed from the case after Charlie's formula fails to turn up any leads. Mathematics used: Probability theory, 11-dimensional supergravity theory, and projectile motion

Uncertainty Principle	Nicolas Falacci, Cheryl Heuton	David Von Ancken	January 28, 2005	102
Charlie successfully predicts the time and place of a bank robbery using what he says are elements of Heisenberg's uncertainty principle (he's really talking about the observer effect), but when the planned arrest goes bad, he retreats into the math problem P vs. NP. Mathematics used: P vs. NP and Heisenberg's uncertainty principle

Vector	Jeff Vlaming	David Von Ancken	February 4, 2005	103
A deadly strain of influenza is spreading through Los Angeles. Don investigates whether the strain was released deliberately, and Charlie tries to calculate the origin and likely spread of the virus. Mathematics used: Patient Zero, Viral vector, Vector

Structural Corruption	Liz Friedman	Tim Matheson	February 11, 2005	104
An engineering student commits suicide, but Charlie suspects foul play. Don disagrees, but he agrees to help Charlie investigate whether the student was murdered because of his research into a building's structural integrity. Mathematics used: Pendulum and Foucault pendulum

Prime Suspect	Doris Egan	Lesli Linka Glatter	February 18, 2005	105
A young girl is kidnapped, but her parents refuse to cooperate with Don's investigation. The girl's father is a mathematician, and the kidnapping may be related to his work on the Riemann hypothesis. Mathematics used: Cryptography, prime numbers, Riemann hypothesis and Riemann zeta function

Sabotage	Liz Friedman	Lou Antonio	February 25, 2005	106
Don is investigating a series of train accidents which are recreations of previous wrecks. The saboteur leaves a note composed entirely of numbers. Mathematics used: Kasiski examination, Cryptography, Fibonacci sequence, golden ratio and Beale ciphers

Counterfeit Reality	Andrew Dettman	Alex Zakrzewski	March 11, 2005	107
A strange series of robberies leads Don into a case involving counterfeit money, kidnapping and murder. Don is aided by Secret Service agent Kim Hall while Charlie uses maths to analyse fake bank notes and track their spread. Mathematics used: Guilloché pattern and wavelet analysis

Identity Crisis	Wendy West	Martha Mitchell	April 1, 2005	108
A new case with disturbing similarities to an old case leads Don to question whether he put the right man in jail. While Don tries to find the connection between the two cases, he asks Charlie to look for mistakes or flaws in the first case. Mathematics used: Poker, geometric progression - paper folding, pyramid scheme, fingerprint and Schrödinger's cat

Sniper Zero	Ken Sanzel	J. Miller Tobin	April 15, 2005	109
Don is investigating a series of sniper killings, and Charlie is searching for an underlying pattern to the attacks. What appears to be bad data can't be eliminated from the analysis, because it fits the only pattern he can find. Mathematics used: projectile motion, Tipping Point, regression toward the mean and exponential growth

Dirty Bomb	Andrew Dettman	Paris Barclay	April 22, 2005	110
A truck carrying radioactive waste disappears, and Don fears that a dirty bomb will be set off in downtown Los Angeles. Mathematics used: Game theory - prisoner's dilemma, radioactive decay

Sacrifice	Ken Sanzel	Paul Holahan	May 6, 2005	111
A researcher is murdered in his home, and Charlie must reconstruct data erased from his computer while Don investigates possible suspects. Mathematics used: Sabermetrics, Econometrics

Noisy Edge	Nicolas Falacci, Cheryl Heuton	J. Miller Tobin	April 29, 2005	112
An unidentified flying object travels over Los Angeles and then disappears. Don suspects terrorist activity, and Charlie tries to find out more about the object and its flight path. Mathematics used: Combinatorics and conditional probability distribution - "squish-squash" with Fourier analysis

Man Hunt	Andrew Dettman	Martha Mitchell	May 13, 2005	113
A prison bus crashes, allowing two dangerous convicts to escape. Don is joined by his former partner from Fugitive Recovery as the Bureau launches an effort to recapture them. Mathematics used: Bayesian inference, Markov chain, Chapman-Kolmogorov equation and Monty Hall problem

[edit] Season 2: 2005-2006

Season 2 premiered on 23 September 2005 and its season finale was on 19 May 2006. Season two sees several changes to Don's FBI team: Terry Lake is reassigned to Washington DC and two new members join Don and David Sinclair: Megan Reeves and Colby Granger. Charlie is challenged on one of his long-standing pieces of mathematical work and also starts work on a new theory, Cognitive Emergence Theory. Larry sells his home and lives a nomadic lifestyle, while he becomes romantically involved with Megan. Amita receives an offer for an assistant professor position at Harvard University, but is plagued by doubt as her relationship with Charlie is challenged and her career is in upheaval. Alan begins work and dating again, though he struggles with the loss of his wife, and both he and Charlie have a dream of her.

Title	Writer	Director	Original Airdate	#
Judgment Call	Ken Sanzel	Alex Zakrzewski	September 23, 2005	201
When a judge's wife is shot and killed, Don and his team look into the judge's cases to determine if one of his verdicts led to the murder. Mathematics used: Scatterplot, bayesian spam filtering and conditional probability

Better or Worse	Andrew Dettman	J. Miller Tobin	September 30, 2005	202
Don and his team are called in when a woman attempting to rob a jewelry store in Beverly Hills is shot by a security guard. Mathematics used: Von Neumann cellular automata and pseudo-random numbers

Obsession	Robert Port	John Behring	October 7, 2005	203
The FBI becomes involved in the stalking of a popular singer after she is threatened by an intruder in her house and reveals a series of threatening letters she's received through the mail. Mathematics used: Trigonometry, curvelet analysis, Forensic Information System for Handwriting, spherical astronomy and art gallery problem

Calculated Risk	J. David Harden	Bill Eagles	October 14, 2005	204
Don and Megan are called to the murder scene when the CEO of a powerful energy company — who was about to testify against her fellow executives — is murdered at her home and her son is the only witness. Mathematics used: Conditional probability and compound interest

Assassin	Nicolas Falacci, Cheryl Heuton	Bobby Roth	October 21, 2005	205
Along with David Sinclair and new FBI Agent Colby Granger, Don discovers a secret code during a raid and enlists Charlie's help to crack it. Mathematics used: transposition cipher, Game theory and paper plane

Soft Target	Don McGill	Andy Wolk	November 4, 2005	206
A week-long series of counter-terrorism exercises are put to the test by Homeland Security in Los Angeles, but the first one is violated by someone who releases a potentially lethal gas in the subway system. Mathematics used: Percolation theory and diffusion

Convergence	Nicolas Falacci, Cheryl Heuton	Dennis Smith	November 11, 2005	207
Don investigates a series of home invasions in which the thieves steal only high-end items from wealthy individuals. Meanwhile, an old adversary challenges Charlie's work. Mathematics used: Group theory, data-mining, Fourier analysis, calendars, Three-dimensional trilateration, Set theory and projectile motion

In Plain Sight	Julie Hébert	John Behring	November 18, 2005	208
Megan feels responsible for an agent's death following an explosion at a house where meth is being illegally produced and that the FBI targeted for a bust. Mathematics used: Flock behavior, steganography and matrices - error correction code

Toxin	Ken Sanzel	Jefery Levy	November 25, 2005	209
Don learns that someone is poisoning non-prescription drugs made by a leading pharmaceutical company after four people nearly die from the tampering. Mathematics used: Information theory - information entropy, graph theory - Seven Bridges of Königsberg and soap bubble theory with Steiner tree

Bones of Contention	Christos Gage, Ruth Fletcher	Jeannot Szwarc	December 9, 2005	210
A woman researcher who specializes in Native American antiquities is attacked and killed at the museum where she works. The museum is located on federal land so the FBI is called in. Mathematics used: Exponential decay and Voronoi diagram

Scorched	Sean Crouch	Norberto Barba	December 16, 2005	211
An arsonist believed to be part of an extremist environmental group sets a fire at a car dealership that kills a salesman. The group's name is spray painted at the scene and is the fourth such fire, but the first to claim a life. Mathematics Used: Combustion and Principal components analysis

The OG	Andrew Dettman	Rod Holcomb	January 6, 2006	212
When Don and his team are called to the murder scene of a Los Angeles gang member, they learn the victim is a fellow agent who had been working undercover. Mathematics used: Poisson distribution and social network analysis Trivia: The teaser features the chorus from the song "Remember the Name".

Double Down	Don McGill	Alex Zakrzewski	January 13, 2006	213
When the FBI is called to investigate a murder at a Los Angeles card club, it leads the agents to unravel a complicated card counting scheme involving a group of college students whose lives may now be at risk. Mathematics used: Probability involving sampling without replacement, time series analysis and randomization

Harvest	J. David Harden	John Behring	January 27, 2006	214
A Southeast Asian teenager is found in the blood-spattered basement of an old downtown hotel where she was apparently being tortured. The investigation soon reveals that the girl, along with three other missing women, are victims of a black-market organ-harvesting scheme. Mathematics used: Markov chain, ellipses and Genetic variation

The Running Man	Ken Sanzel	Terrence O'Hara	February 3, 2006	215
A DNA synthesizer with the capability of customizing diseases is stolen from the campus where Charlie teaches, and Don fears the thieves may be terrorists out to start or advance a bio-warfare program. Mathematics used: Benford's law, continued fraction, astronomy, and probability

Protest	Nicolas Falacci, Cheryl Heuton	Dennis Smith	March 3, 2006	216
A pedestrian is killed when a homemade bomb explodes under a car outside of a downtown Army recruiting center. The investigation reveals that a similar bombing occurred exactly 35 years ago at an ROTC office that killed two people. Mathematics used: Graph theory, Ramsey numbers, and recursive sequence

Mind Games	Andrew Dettman	Peter Markel	March 10, 2006	217
When the bodies of three illegal-immigrant women are found on government-owned land in a wilderness area, Don investigates and learns a psychic led the police to the crime scene after allegedly seeing visions of the bodies. Mathematics used: Binomial theorem and pi

All's Fair	Julie Hébert	Rob Morrow	March 31, 2006	218
In an effort to find the murderer of an Iraqi woman, Don enlists the help of the victim's cousin, who lives in Los Angeles. Through her cousin, Don learns information about the woman's disturbing connection to Saddam Hussein, which could lead to her murderer. Mathematics used: Density, Sudoku, logistic regression, and game theory

Dark Matter	Don McGill	Peter Ellis	April 7, 2006	219
As Don and his team investigate the motive behind two students' deadly school shooting, Charlie uses the school's radio frequency identification system to track the shooters' movements through the school's hallways. Mathematics used: RFID, and optimization problem

Guns and Roses	Robert Port	Stephen Gyllenhaal	April 21, 2006	220
When an ATF agent is found dead amid questionable circumstances, Don demands to take on the case, which revolves around an elaborate bank heist, after he learns the victim is his ex-girlfriend. Mathematics used: Echolocation and biomathematics – DNA sequence alignment

Rampage	Ken Sanzel	J. Miller Tobin	April 28, 2006	221
After an unknown man opens fire in the FBI offices, Don and his team must investigate his motive and his connection to a dangerous arms dealer who is on trial. Mathematics used: Brownian Motion, Venn diagram and tesseract/hypercube

Backscatter	Nicolas Falacci, Cheryl Heuton	Bill Eagles	May 5, 2006	222
An FBI investigation into a computer hacking scam, which taps into a bank's system to gain access to customer's identities and financial assets, becomes personal for Don when the Russian mob spearheading it comes after him and threatens the safety of Charlie and Alan. Mathematics used: Explicit functions, implicit functions, geometric progression and exponential growth

Undercurrents	J. David Harden	J. Miller Tobin	May 12, 2006	223
Five young Chinese girls wash up on the shore; while Charlie works out where they came from, it emerges that one of the girls is carrying Avian Flu. Mathematics used: Encoding, vector fields, kinematics and n-dimensional space

Hot Shot	Barry Schindel	John Behring	May 19, 2006	224
When two women are found dead with an apparent drug overdose, Don suspects a serial killer. Charlie's help on Don's case is hindered by his bizarre dream about his mother. Mathematics used: Directed graph, parabolic equations and probability

[edit] Season 3: 2006-2007

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Season 3 premiered on September 22, 2006 with the episode "Spree". Charlie and Amita intensify their relationship, as do Larry and Megan. Amita has troubles adjusting in her new role as a CalSci professor, and Larry announces his leave of absence—he will be on the space station for six months, which greatly distresses Charlie. Dr. Mildred Finch, the newly-appointed Chair of the CalSci Physics, Mathematics, and Astronomy Division, initially troubles Charlie and his colleagues, as Alan dates her. Don dates Agent Liz Warner, questions his ethics and self-worth, and receives counseling.

Title	Writer(s)	Director(s)	Original Airdate	#
Spree	Ken Sanzel	John Behring	September 22, 2006	301
Don is on the trail of a criminal couple consisting of a 30 year old teacher and a 17 year student who are committing crimes across the country. Charlie and Amita's relationship changes and Alan decides to move out. Mathematics used: pursuit curves and geodesic sphere

Two Daughters	Ken Sanzel	Alex Zakrzewski	September 29, 2006	302
Continued from last episode, Don and his team look for Crystal's old contacts. When Megan is kidnapped, things get personal for the team. Mathematics used: polar spirals and parametric equations

Provenance	Don McGill	David Von Ancken	October 6, 2006	303
A painting worth millions of dollars is stolen from a museum and when a related murder plot surfaces, shocking details begin to arise. Mathematics used: Linear diophantine equations and Curvelet analysis

The Mole	Robert Port	Stephen Gyllenhaal	October 13, 2006	304
The death of a Chinese interpreter leads Don and his team to investigate a possible mole from within the Department of Justice. Colby covers up information on Don's case for a friend. Charlie is upset when Larry publishes a paper without his help. Mathematics used: Steady Motion Algorithm, Curtate cycloid, symmetry and combinatorics

Traffic	Nicolas Falacci, Cheryl Heuton	J. Miller Tobin	October 20, 2006	305
A series of violent highway attacks which appear to be random puzzles Don and his team. Mathematics used: Randomness, partial differential equations and traffic flow

Longshot	J. David Harden	John Behring	October 27, 2006	306
The team investigates the death of a man armed with a sophisticated statistical analysis that can identify the winning horse at a race track. Mathematics used: Probability, Arbitrage betting and Data mining

Blackout	Andrew Dettman	Scott Lautanen	November 3, 2006	307
After an attack on a power station which left parts of Los Angeles in the dark, the team must find the assailant's real target. Mathematics used: Center of mass, harmonic series, directed graph, Load flow analysis and Dantzig-Wolfe Decomposition

Hardball	Nicolas Falacci, Cheryl Heuton	Fred Keller	November 10, 2006	308
A minor league baseball player is found dead of steroid abuse, leading the investigators to an unusual chain of suspects. Mathematics used: Sabermetrics and Shiryaev-Roberts Change-point analysis

Waste Not	Julie Hebert	J. Miller Tobin	November 17, 2006	309
Mysterious cancer clusters are found around a number of elementary schools whose playgrounds were all paved by the same company. A new CalSci administrator pains Charlie and his colleagues, while Alan dates her. Mathematics used: Groundwater flow equation and Cancer clusters

Brutus	Ken Sanzel	Oz Scott	November 24, 2006	310
A California State Senator and a psychiatrist--neither have much in common with the other except for one thing...they both turn up dead on Don's watch. While the circumstances of their deaths are different, Don thinks the two murders are related, and tries to prove his hunch right. What he finds may bring to light a deep secret the government has been hiding for years. Mathematics used: Network flow, network theory, Euclid's Orchard and Target Selection Theory

Killer Chat	Don McGill	Chris Hartwill	December 15, 2006	311
Don and Charlie track a killer who has murdered several sex predators. The predators took advantage of teenage girls they met in chat rooms. Meanwhile, Larry is ready to begin an adventure with NASA. Mathematics used: Statistical Textual Analysis and principal components analysis

Nine Wives	Juile Hebert	Juile Hebert	January 5, 2007	312
Don, Charlie, and the team search for a polygamist who is on the run. The man is on the FBI's Ten Most Wanted List for rape and murder. The polygamist in this episode is unofficially based on Warren Jeffs. Mathematics used: Lévy flights, Inbreeding coefficients and Kinship chains

Finders Keepers	Andrew Dettman	Colin Bucksey	January 12, 2007	313
After an extremely expensive yacht sinks in the middle of a race, Charlie is put between a rock and a hard place when Don and the NSA need his help on the case. Mathematics used: fluid dynamics, Constraint and Optimization

Take Out	Sean Crouch	Leslie Libman	February 2, 2007	314
When two police officers are killed while eating dinner out, Charlie tries to figure out where the killers will strike next. Don's superiors make him see the department shrink. Mathematics used: Outliers and data mining

End of Watch	Robert Port	Michael Watkins	February 9, 2007	315
Don and the team reopen a cold case when a LAPD badge turns up at a construction site. When Charlie joins the investigation, they attempt to track down the owner of the badge, an officer who has been missing 17 years. Meanwhile, Alan is informed that he's being sued. Mathematics used: Laser Swath Mapping and Quantum Mechanics

Contenders	J. David Harden	Alex Zakrzewski	February 16, 2007	316
One of David's closest friends is called into question after a man dies while boxing with him. When it turns out this is not the first time such an event has happened, things look even worse. Charlie is busy practicing what little he knows about poker, so he can take Larry's spot in a tournament. Mathematics used: Kruskal's algorithm, Flow network

One Hour	Ken Sanzel	J. Miller Tobin	February 23, 2007	317
Don talks to his therapist again, and while he's gone, the team races to find an eleven year-old boy being held on a $3 million ransom, and time is running out... Mathematics used: 'cake-cutting' algorithm, Logic maze, VoIP, State diagram and Egress Trivia: This episode is presented in real-time format

Democracy	Cheryl Heuton, Nicolas Falacci	Steve Boyum	March 9, 2007	318
Several area murders seem to be tied to voter fraud. Don, Charlie, and the team must find the killers before they strike again. Mathematics used: Statistics, Probability theory, metadata and Organizational theory Trivia: Jay Baruchel, originally seen in 308 "Hardball" reprises his role as Oswald Kittner

Pandora's Box	Andrew Black	Dennis Smith	March 30, 2007	319
When a jet crashes in the middle of a forest, Charlie suspects that there is more to the crash than what meets the eye. Mathematics used: Ito-Stratonovich drift integrals and wavelet deconvolution

Burn Rate			April 6, 2007	320
Don and Charlie hunt for a serial letter bomber and disagree over whether a key suspect, a physics professor working as a consultant on explosives for the Department of Defense who eluded conviction once before, is responsible for the latest murder. Mathematics used:
The Art of Reckoning			April 2007	321
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